Base | Representation |
---|---|
bin | 111100110011… |
… | …1011001100001 |
3 | 2012222201020102 |
4 | 1321213121201 |
5 | 31130141201 |
6 | 3055152145 |
7 | 534660641 |
oct | 171473141 |
9 | 65881212 |
10 | 31880801 |
11 | 16aa5577 |
12 | a815655 |
13 | 67b30a4 |
14 | 433c521 |
15 | 2beb26b |
hex | 1e67661 |
31880801 has 8 divisors (see below), whose sum is σ = 32222400. Its totient is φ = 31541328.
The previous prime is 31880789. The next prime is 31880809. The reversal of 31880801 is 10808813.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-31880801 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (31880809) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58010 + ... + 58556.
It is an arithmetic number, because the mean of its divisors is an integer number (4027800).
Almost surely, 231880801 is an apocalyptic number.
It is an amenable number.
31880801 is a deficient number, since it is larger than the sum of its proper divisors (341599).
31880801 is a wasteful number, since it uses less digits than its factorization.
31880801 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1063.
The product of its (nonzero) digits is 1536, while the sum is 29.
The square root of 31880801 is about 5646.3086171409. The cubic root of 31880801 is about 317.0855186282.
The spelling of 31880801 in words is "thirty-one million, eight hundred eighty thousand, eight hundred one".
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